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JPS54128772A - Wattmeter - Google Patents

Wattmeter

Info

Publication number
JPS54128772A
JPS54128772A JP3611178A JP3611178A JPS54128772A JP S54128772 A JPS54128772 A JP S54128772A JP 3611178 A JP3611178 A JP 3611178A JP 3611178 A JP3611178 A JP 3611178A JP S54128772 A JPS54128772 A JP S54128772A
Authority
JP
Japan
Prior art keywords
sine
waves
current
multiplied
strain wave
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP3611178A
Other languages
Japanese (ja)
Other versions
JPS5837508B2 (en
Inventor
Haruo Takahashi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3611178A priority Critical patent/JPS5837508B2/en
Publication of JPS54128772A publication Critical patent/JPS54128772A/en
Publication of JPS5837508B2 publication Critical patent/JPS5837508B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Measuring Frequencies, Analyzing Spectra (AREA)
  • Control Of Electrical Variables (AREA)

Abstract

PURPOSE: To facilitate the metering operation of the ineffective power of any frequency component of a strain wave alternate current by multiplying and integrating strain wave voltage and current and a preset sine-wave.
CONSTITUTION: A strain wave voltage v, a strain wave current i and sine waves 13 of a preset period are multiplied at 15 and 16 and are integrated at 19 and 20. On the other hand, the voltage v, the current i and the sine-waves having their phases shifted one quarter period from the sine-waves 13 are multiplied at 17 and 18 and are integrated at 21 and 22. The outputs 19 and 22, and 20 and 21 are multiplied at 23 and 24, and the results are subjected to subtractions at 25 to meter the ineffective watt of the sine-waves.
COPYRIGHT: (C)1979,JPO&Japio
JP3611178A 1978-03-30 1978-03-30 power measurement device Expired JPS5837508B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3611178A JPS5837508B2 (en) 1978-03-30 1978-03-30 power measurement device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3611178A JPS5837508B2 (en) 1978-03-30 1978-03-30 power measurement device

Publications (2)

Publication Number Publication Date
JPS54128772A true JPS54128772A (en) 1979-10-05
JPS5837508B2 JPS5837508B2 (en) 1983-08-16

Family

ID=12460651

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3611178A Expired JPS5837508B2 (en) 1978-03-30 1978-03-30 power measurement device

Country Status (1)

Country Link
JP (1) JPS5837508B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009288070A (en) * 2008-05-29 2009-12-10 Origin Electric Co Ltd Device for measuring alternating current electric power

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2009288070A (en) * 2008-05-29 2009-12-10 Origin Electric Co Ltd Device for measuring alternating current electric power

Also Published As

Publication number Publication date
JPS5837508B2 (en) 1983-08-16

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